Diagram of Transit Satellite

Developed in the 1960s by the U.S. Navy, the Transit system grew to six satellites, gave worldwide coverage every 90 minutes, and provided position accuracy to within 200 meters (660 feet). Transit service was made available to commercial shipping in 1967 and operated until 1996.

Caption:
Transit was the first satellite-based global positioning and navigation system.
Type: Illustration
Image Date: 2012
Credit: National Air and Space Museum, Smithsonian Institution.
Origin: National Air and Space Museum, Smithsonian Institution.
Creator: Ashley Hornish
Innovations
Navigation Methods
 
Transit was the first satellite-based global positioning and navigation system.